<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 添加角色按钮区域 -->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addRoleDialogVisible=true">添加角色</el-button>
        </el-col>
      </el-row>
      <!-- 角色列表区域 -->
      <el-table :data="rolesList" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              :class="['bdbootom',i1===0?'bdtop':'','vcenter']"
              v-for="(item1,i1) in scope.row.children"
              :key="item1.id"
            >
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二级和三级权限 -->
              <el-col :span="19">
                <!-- 通过for循环嵌套渲染二级权限 -->
                <el-row
                  :class="[i2===0?'':'bdtop','vcenter']"
                  v-for="(item2,i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="removeRightById(scope.row,item2.id)"
                    >{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>

                  <el-col :span="18">
                    <el-tag
                      type="warning"
                      v-for="(item3,i3) in item2.children"
                      :key="item3.id"
                      closable
                      @close="removeRightById(scope.row,item3.id)"
                    >{{item3.authName}}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column label="序号" type="index"></el-table-column>
        <el-table-column label="角色名称" prop="role_name"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <!-- //--- 这里取到当前单元格 -->
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.role_id)"
            >编辑</el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeRoleById(scope.row.role_id)"
            >删除</el-button>
            <!-- 分配权限按钮 -->
            <el-button
              type="warning"
              icon="el-icon-setting"
              size="mini"
              @click="showSetRightDialog(scope.row.role_id)"
            >分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 添加角色对话框 -->
    <el-dialog
      title="添加角色"
      :visible.sync="addRoleDialogVisible"
      width="50%"
      @close="addRoleDialogClosed"
    >
      <!-- 内容主体区域 -->
      <el-form
        :model="addRoleForm"
        :rules="addRoleFormRules"
        ref="addRoleFormRef"
        label-width="80px"
      >
        <el-form-item label="角色名称" prop="role_name">
          <el-input v-model="addRoleForm.role_name"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="addRoleForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRole">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改角色对话框 -->
    <el-dialog
      title="修改角色信息"
      :visible.sync="editRoleDialogVisible"
      width="50%"
      @close="editRoleDialogClosed"
    >
      <!--  -->
      <el-form
        :model="editRoleForm"
        :rules="editRoleFormRules"
        ref="editRoleFormRef"
        label-width="80px"
      >
        <el-form-item label="角色名称">
          <el-input v-model="editRoleForm.role_name" disabled></el-input>
        </el-form-item>
        <el-form-item label="角色描述">
          <el-input v-model="editRoleForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <!--  -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRoleInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配权限对话框 -->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightsDialogVisible"
      width="=50%"
      @close="setRightsDialogClosed"
    >
      <!-- 树形控件 -->
      <el-tree
        :data="rightsList"
        :props="treeProps"
        show-checkbox
        node-key="id"
        default-expand-all
        :default-checked-keys="defKeys"
        ref="treeRef"
      ></el-tree>

      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightsDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      menulist: this.$store.state.menuList,
      rolesList: [{},{}],
      addRoleDialogVisible: false,
      editRoleDialogVisible: false,
      addRoleForm: {
        role_name: "",
        roleDesc: ""
      },
      editRoleForm: {},
      addRoleFormRules: {
        role_name: [
          { required: true, message: "请输入角色名称", trigger: "blur" }
        ]
      },
      editRoleFormRules: {},
      //控制分配权限的控制与隐藏
      setRightsDialogVisible: false,
      //所有权限数据
      rightsList: [],
      //   树形控件的属性绑定对象
      treeProps: {
        label: "authName",
        children: "children"
      },
      //   默认选中的树的节点id值数组
      defKeys: [],
      //   即将分配权限的id
      roleId: ""
    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    //获取所有数据的列表
   getRolesList() {
      this.$http.get('/api/role_view').then(res=>{
        this.rolesList = res.data
      });
    },
    // 添加角色对话框关闭
    addRoleDialogClosed() {
      this.$refs.addRoleFormRef.resetFields()
    },
    editRoleDialogClosed() {
      this.$refs.editRoleFormRef.resetFields()
    },
    addRole() {
      this.$refs.addRoleFormRef.validate(async valid => {
        if (!valid) return
        //可以发起添加角色的网络请求
        const res = await this.$http.post('/api/role_add', this.addRoleForm)
        if (res.status !== 200) {
          return this.$message.error("添加角色失败！")
        }
        this.getRolesList()
        this.$message.success("添加角色成功！")
        this.addRoleDialogVisible = false
        
      })
    },
    // 展示编辑角色的对话框
    async showEditDialog(index) {
      const res =await this.$http.post('/api/role_edit_open',{role_id:index})
      if (res.status !== 200) {
        return this.$message.error("查询角色信息失败！")
      }
      this.editRoleForm = res.data[0]
      this.editRoleDialogVisible = true
    },
    editRoleInfo() {
      this.$refs.editRoleFormRef.validate(async valid => {
        if (!valid) return
        //可以发起修改角色的网络请求
        const res = await this.$http.post('/api/role_edit',this.editRoleForm)
        if (res.status !== 200) {
          return this.$message.error("更新角色信息失败！")
        }
        // 重新获取用户列表数据
        this.getRolesList()
        this.$message.success("更新角色信息成功！")
        // 隐藏更新角色信息对话框
        this.editRoleDialogVisible = false
      })
    },
    //根据id删除角色
    removeRoleById(index) {
      this.$confirm("此操作将永久删除该角色, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      })
        .then(async () => {
          const res =await this.$http.post('/api/role_drop',{role_id:index})
          if (res.status !== 200) {
            return this.$message.error("删除角色失败！")
          }
          // 重新获取用户列表数据
            this.getRolesList()
          this.$message({
            type: "success",
            message: "删除成功!"
          })
          
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消删除"
          })
        })
    },
    // 根据id删除权限
    removeRightById(role, rightId) {
      this.$confirm("此操作将永久删除该权限, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      })
        .then(async () => {
          const { data: res } = await this.$http.delete(
            `roles/${role.id}/rights/${rightId}`
          )
          if (res.meta.status !== 200) {
            return this.$message.error("删除权限失败！")
          }
          this.$message({
            type: "success",
            message: "删除成功!"
          })
          // 重新获取用户列表数据
          //this.getRolesList()
          role.children = res.data
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消删除"
          })
        })
    },
    // 展示分配权限的对话框
    async showSetRightDialog(role) {
      this.roleId = role.id
      //获取所有权限列表
      // const { data: res } = await this.$http.get("rights/tree")
      // if (res.meta.status !== 200) {
      //   return this.$message.error("获取权限数据失败！")
      // }
      this.getleafKeys(role, this.defKeys)
      this.setRightsDialogVisible = true
      this.rightsList = this.menulist
      // console.log(res.data)
    },
    // 通过递归的形式，获取角色下所有三级权限的id，并保存到defKeys数组中
    getleafKeys(node, arr) {
      //如果当前node节点中不包括含children，则是三级节点，就获取其id
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => this.getleafKeys(item, arr))
    },
    //监听分配权限对话框关闭事件
    setRightsDialogClosed() {
      this.defKeys = []
    },
    //点击为角色分配权限
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]

      const idstr = keys.join(",")
      const { data: res } = await this.$http.post(
        `roles/${this.roleId}/rights`,
        { rids: idstr }
      )
      if (res.meta.status !== 200) {
        return this.$message.error("分配权限失败！")
      }
      // console.log(res);
      this.$message.success("分配权限成功！")
      this.getRolesList()
      this.setRightsDialogVisible = false
      //console.log(keys);
    }
  }
}
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbootom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>